ES2595355T3 - External fixing ring - Google Patents

Abstract

An external fixing ring (10), comprising: a ring with a central opening defined therethrough, the ring having internal (18) and external (20) surfaces of the ring and upper (12) and lower surfaces of the ring ; one or more tabs extending radially from the inner (18) or outer (20) surface, characterized in that each of the one or more tabs (14, 15) comprises at least one first (22a) and a second (22b ) mounting surfaces defined on the internal (18) or external (20) surface, each of the first (22a) and the second (22b) mounting surfaces (22a, 22b) having an opening (24, 25) defined in the same to receive a clamping device; said first (22a) and second (22b) mounting surfaces inclined to each other and the openings (24, 25) being located obliquely on the flange (14, 15).

Description

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DESCRIPTION

External fixing ring Technical field

The present disclosure refers, in general, to the field of external fixing devices and, more specifically, to an external fixing ring and other external supports that have a unique location and orientation of the hole, for use as part of a system of external fixation

Background

Without limiting the scope of this disclosure, its background is described in connection with external fixing devices. In general, external fixation devices are commonly used in both the upper and lower limbs of adults and children in various surgical procedures, including limb lengthening, correction of deformities and treatment of fractures, defective consolidations, pseudo-joints and bone defects

A common external fixation device is known as the Ilizarov apparatus. The external fixation procedure of Ilizarov involves a rigid structure consisting of several rings or arches, which are placed externally around the limb and are attached to injured bone segments (for example, due to a fracture) or surgically separated (for example , for the lengthening of the extremities and the correction of deformities) using special bone fixatives (wires and nails) inserted in the bone segment and connected to the corresponding section of the external structure. Opposite rings of the nested structure are connected either by threaded or telescopic connecting rods or by mounted uniplanar or multi-planar angular joints, which allow the surgeon to adjust the relative position of the rings between them longitudinally or angularly over a period of time. This allows the formation of new bone little by little in the gap between bone segments, created by this elongation technique. Once the desired position of the bone segments is reached after a period of time (for example, 2-6 weeks), the external apparatus is stabilized in a fixed position and left on the bone segments until the bone is cured. The newly formed fracture or bone is completely or substantially mineralized, which may take up to 3-6 additional months, depending on the nature of the pathology and the degree of deformity.

Another common external fixation device is a Taylor Spatial Frame® as described in US Patent No. 6,030,386, 5,891,143 and 5,776,132. The Taylor Spatial Frame is a hexapod type device based on a Stewart platform, but it shares many components and features with the Ilizarov apparatus. The Taylor Spatial Frame consists of two external fixing rings, connected to bone segments by means of wires or nail means and connected to each other by 6 straps that can be lengthened or shortened, as necessary. The adjustment of the lengths of the straps allows manipulating the bone segments in 6 axes (for example, lengthening / shortening, external / internal rotation, anterior / posterior horizontal translation, medial / lateral horizontal translation, anterior / posterior angular translation, and angular translation middle / lateral) to correct linear, angular and rotational deformities simultaneously. The rings of the device include openings or holes for fixing wires and half nails, and positioning of the straps and other connecting elements. However, there is a finite number of holes in each ring, six of which are occupied with braces. This creates a positioning problem for the fastening of the wire and the nail means, and for the placement of the additional connecting rods due to the demand for shortage of holes in the ring.

Additionally, the configuration of the Taylor Spatial Frame rings requires connecting the braces to the top or bottom of the rings. To provide such connections, the rings are configured to receive only ball joints or universal joints in the ring holes, which extend from the upper or lower surfaces of the rings. However, both types of joints have drawbacks. A drawback for the use of rings coupled to ball joints is that there is not enough space clearance for the ball joints to make some adjustments in the orientation of the braces and the rings. A drawback of the use of rings coupled to universal joints is the decrease in the functional length of the braces, due to the space occupied by the length of the universal joints. Another drawback is the instability caused by the universal joints. The universal joints each include at least one hinge connection, in which a pivot nail is usually loosely held by two rotating parts that are designed to rotate about the longitudinal axis defined by the pivot nail. Due to the loose coupling between the rotating parts and the pivoting nail, the hinge connection design presents an undesirable degree of inherent translation movement and adds instability to the Taylor Spatial Frame. Consequently, the requirement to fix the braces at the top or bottom of the rings ultimately leads to instability and a limited range of movement of the Taylor Spatial Frame.

Another fixing device known in the art is described in document CA 2 633 944 A1.

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Summary

The present disclosure provides an external fixing ring according to independent claim 1, and a method of mounting an external fixing device according to independent claim 16.

Brief description of the drawings

For a more complete understanding of the features and advantages of the present disclosure, reference is now made to the detailed description next to the attached figures, in which:

FIGURE 1 is a top view of a fixing ring in accordance with an embodiment of the present disclosure; FIGURE 2A is a perspective view of an embodiment of the fixing ring of FIGURE 1;

FIGURE 2B is a perspective view of a portion of the embodiment of the fixing ring shown in FIGURE 2A;

FIGURE 3A is a perspective view of another embodiment of the fixing ring in accordance with the present disclosure;

FIGURE 3B is a perspective view of a portion of the embodiment of the fixing ring of FIGURE 3A;

FIGURE 3C is a partial sectional view of a first embodiment of a flange shown in FIGURE 3B;

FIGURE 3D is a partial sectional view of a second embodiment of a flange shown in FIGURE 3B;

FIGURE 3E is a partial sectional view of a third embodiment of a flange shown in FIGURE 3B;

FIGURE 3F is a partial sectional view of a fourth embodiment of a flange shown in FIGURE 3B;

FIGURE 3G is a partial sectional view of a fifth embodiment of a flange shown in FIGURE 3B;

FIGURE 4 is a perspective view of yet another embodiment of the fixing ring in accordance with the present disclosure;

FIGURE 5 is an exploded view of the fixing ring shown in FIGURE 4, which is coupled to a marker;

FIGURE 6 is a perspective view of a fixing ring system; Y

FIGURE 7 is a side view of an embodiment of the fixing ring system of FIGURE 6.

Detailed description

Although the execution and use of various embodiments of the fixing ring in accordance with the present disclosure are discussed in detail below, it should be understood that the present application provides many applicable inventive concepts that can be incorporated into a wide variety of specific contexts. The specific embodiments analyzed in this document are merely illustrative of specific forms of manufacture and use of the fixing device disclosed in this document, and do not limit the scope of the application and its use does not delimit the application, except as indicated in the claims.

The present application discloses a fixing ring made of a properly strong and rigid material, such as a metal, alloy, plastic, composite or ceramic material. The body portion of the ring includes substantially equidistant openings or holes, arched therein and extending through the upper surface of the ring to the lower surface of the ring, substantially equidistant inclined flanges extending radially from the outer surface of the ring, and substantially equidistant openings that extend at least partially towards the outer surface of the ring. During an operation, the arcuate holes are used to connect wires and half nails inserted in the bone segments, while the inclined flanges and openings are used to fix connection braces. The openings are positioned obliquely on the inclined flange to provide the brace with the optimum range of motion when connected to the fixing ring. Additionally, the straps can be connected to other openings located on the outer or inner surfaces of the ring.

FIGURE 1 is a top view of the fixing ring 10 of the present application. The fixing ring 10 includes an upper surface 12, a lower surface (not shown), an internal lateral surface (not shown) and an external lateral surface (not shown). The fixing ring 10 has numerous inclined flanges 14a, 14b, 14c, 14d, 14e and 14F that extend from the outer side surface (not shown), to provide mounting surfaces for the connection braces. The inclined flanges 14 of the fastener may be located in various positions in the fastener ring 10. The upper surface 12 includes numerous upper holes 16 extending through the upper surface 12 to the lower surface (not shown). The upper holes 16 can be used to fix wires and fasteners of the half nails type (bolts), threaded or telescopic connecting rods, plates, struts or other connecting elements to connect the device to the ring 10.

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With reference to the embodiments shown in FIGURES 2A and 2B, the fixing ring 10 includes an upper surface 12, a lower surface (not shown), an internal lateral surface 18 and an external lateral surface 20. The upper surface 12 includes numerous holes upper 16 extending through the upper surface 12 to the lower surface (not shown). The upper holes 16 can be used for fixing wire and fasteners of the medium type nails (bolts), threaded or telescopic connecting rods, plates, struts or other connecting elements of the device to the ring 10. The fixing ring 10 has inclined flanges 14 extending from the outer side surface 20 to provide mounting surfaces 22a and 22b for the connection braces. Each mounting surface 22a and 22b of the inclined flanges 14 includes a threaded opening 24, which extends towards the outer surface 20 of the ring 10 and is adapted to provide a fastener for the connection braces (not shown). The outer side surface 20 includes numerous threaded openings 26 that provide additional fasteners for braces or other connecting elements. In the embodiment shown in FIGURE 2B, the inner side surface 18 includes threaded openings 28 for receiving the braces or other connecting elements. It should be noted that, in some examples, the fixing ring 10 may include the flanges 14 but not the openings 24 or 28. In other examples, the fixing ring 10 may include the openings 24 or 28, but not the flanges 14.

Although it is not shown in FIGURES 2A or 2B, it should be noted that an information indicator can be mounted on the fixing ring 10, or embedded within it, or arranged next to the flanges 14. In some embodiments, the information indicator may have the form of a code, color or serial number that corresponds to relevant information. Some examples of relevant information incorporated in the information indicator, or represented by it, may include the type of external support, ring size, tab identification information, etc. In some embodiments, the information indicator may be in the form of a bar code, a magnetic strip, or a radiofrequency identifier that can be read by a reading device to retrieve the relevant information. In other embodiments, the information indicator may be any other suitable device to embody or represent the information, or a combination of the types of indicators analyzed in the present application.

The number of threaded external openings 26 and internal threaded openings 28 may vary depending on the size of the ring, as well as the number of threaded external openings 26 in the inclined flanges 14. Additionally, the external openings 26, the internal openings 28 and the opening 24 of the inclined flange may be configured to accept other connection elements of the structure of the external fixator 10.

The inclined flanges 14 may be located in various positions on the outer surface 20 of the fixing ring 10. In general, the inclined flanges 14 are located in a geometric position around the fixing ring 10. For example, the fixing ring 10 may include one or more inclined flanges 14, equidistant between each other around the fixing ring 10; However, distances do not have to be equidistant and can be any convenient distance or separation. The inclined flanges 14 can be integrally connected or detachably coupled to the fixing ring 10. The removable inclined flanges 14 can be particularly advantageous in some embodiments, since they allow greater flexibility in the placement of the straps. For example, fixative systems for foot support may require additional braces to provide a firmer support, or to accommodate different ring shapes. The inclined flanges 14 may have different shapes and different sizes, to provide different ranges of movement of the struts connected to the flanges 14. For example, other shapes of inclined flanges 14 include rounded flanges, polygonal flanges, triangular flanges, or square flanges, seen from the upper surface 12. In the exemplary embodiment shown in FIGURE 1, the flanges 14 are inclined at 120 degrees to allow the connection braces to have a maximum range of motion. The term "inclined", as used in the present disclosure, refers to the angular orientation of a first mounting surface with respect to a second mounting surface.

With reference to the embodiment shown in FIGURES 3A and 3B, the fastener ring 10 illustrated includes an upper surface 12, a lower surface (not shown), an internal lateral surface 18 and an external lateral surface 20. The fixing ring 10 additionally has trapezoidal flanges 15 extending from the outer side surface 20 to provide mounting surfaces 22a and 22b for the connection braces. Each mounting surface 22a and 22b of the trapezoidal flanges 15 includes an opening 25 defined therein. Each of the openings 25 has a smooth internal surface (instead of threaded) and is adapted to receive pins 27 (shown in FIGURES 3C to 3G), to provide fastening to the connection braces (not shown). Each of the trapezoidal flanges 15 also has a fixing surface 23 disposed between the mounting surfaces 22a and 22b. The fixing surface 23 has an opening 29 defined therein, and the opening 29 can be operated to receive a screw 31 (shown in FIGURE 3C) to lock the pins 27 in place. In the embodiment shown in FIGURE 3C, screw 31 is a headless screw.

FIGURE 3C is a partial sectional view of the fixing ring 10 of FIGURE 3B, viewed from above in the direction indicated by arrows 7. The openings 25 and 29 are in a recess 33, within the flange 15, which provides space for the pins 27 and the headless screw 31, so that they engage with each other within the flange 15. Each of the pins 27 has a terminal portion that is exposed in the recess 33 when the openings 25 receive the pins 27, as shown in FIGURE 3C. To substantially block

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the pins 27 in place, the headless screw 31 is inserted into the opening 29 to engage with the terminal portions of the pins 27. The openings 25 are aligned at an angle that substantially corresponds to the shape of the inclined tip of the screw without head 31, which increases the contact area between the pins 27 and the headless screw 31.

It should be noted that in some embodiments the number and orientation of openings 25 and 29 may be varied, to accommodate different design needs. For example, in some exemplary embodiments, the alignment of the openings 25 may be altered to accommodate different sizes and configurations of the headless screw 31 and / or the pins 27. It should be further noted that the dynamic load on the contact surface between the pins 27 and the headless screw 31 can cause the contact surface to deform and eventually cause the loosening of the pins 27. Thus, the openings 25 and 29 can be configured to receive pins 27 having grooves defined in the same, to allow an optimal grip and to adapt to the dynamic load of the contact surface.

FIGURE 3D is a partial sectional view of an exemplary embodiment of flange 15 of FIGURE 3B. In this embodiment, the flange 15 is configured to receive pins 27 having grooves 35 defined therein. The grooves 35 are defined in the terminal portions of the pins 27, such that, when the openings 25 receive the pins 27, the grooves 35 are exposed in the recess 33 as shown in FIGURE 3D. The pins 27 are aligned at an angle that allows the headless screw 31 to be inserted into the opening 29 and engage the grooves 35 of the two pins 27, substantially locking the pins 27 in place.

Another exemplary embodiment of the flange 15 of FIGURE 3B is shown in FIGURE 3E. The pin 27 includes a conical tip 37 and grooves 35 defined therein. The conical tip 37 allows a better orientation for the insertion of the pin 27, and a greater contact surface between the pin 27 and the walls of the recess 33 to improve stability. Additionally, the inclusion of a conical tip 37 increases the effective length of the pin 27 and further improves the stability of the pin 27 in the opening 25.

FIGURE 3F is a partial sectional view of another exemplary embodiment of flange 15 of FIGURE 3B. The illustrated headless screw 31 includes a coupling portion 39 pivotally mounted on the tip 41, and the coupling portion 39 can be operated to rotate until it fits firmly in the grooves 35 of both pins 27. The coupling portion 39 allows distribute the joint load on the pins 27, more evenly among the pins 27.

FIGURE 3G a partial sectional view of another exemplary embodiment of the flange 15 of FIGURE 3B. The fixing surface 23 of the flange 15 includes two openings 29 defined therein, each being operable to receive a headless screw 31 to substantially block one of the two pins 27. As a result, the pins 27 can be locked so independent by a different headless screw 31.

FIGURE 4 is a perspective view of an operable fixing ring 10 for receiving a position marker 70 (shown in FIGURE 5). A position marker 70 may be any marker used in orthopedic applications, such as a radiological marker used to determine the spatial orientation of the fixing ring 10. The fixing ring 10 includes an upper surface 12, a lower surface (not shown), a surface inner side 18 and an outer side surface 20. The fixing ring 10 additionally has trapezoidal flanges 15 as described above with reference to FIGURES 3A to 3G. Additionally, the fixing ring 10 includes at least one pair of recessed portions 72 defined therein, to receive nodes 74 of marker 70 and substantially secure marker 70 in an orientation. In different embodiments, the number and placement of the pair of recessed portions 72 may vary. In the exemplary embodiment shown in FIGURE 4, there are four pairs of recessed portions 72 defined on the outer lateral surface 20 of the fixing ring 10, and separated to Different distances In some embodiments, the pairs of recessed portions 72 may be equidistant. In other embodiments, the pairs of recessed portions 72 may be defined on the inner lateral surface 18, the upper surface 12, or the lower surface (not shown).

As shown in FIGURE 5, the marker 70 has a pair of nodules 74 that fit tightly in the recessed portions 72, provided two junction points. This allows a substantially secure coupling of the marker 70 with the fixing ring 10 since having two fixing points prevents the marker 70 from suffering rotational movements. It should be understood that other suitable fixing mechanisms can be used to secure the marker 70 to the fixing ring 10. For example, in some exemplary embodiments, the marker 70 may be modified to include a rectangular spike instead of a pair of nodes 74, and in such cases a corresponding rectangular recessed portion, defined in the fixing ring 10, will be sufficient instead of a pair of recessed portions 72 to prevent rotational movements of the marker 70.

FIGURE 6 is a perspective view of an external fixing ring system 40. The fixing ring 42a includes an upper surface 12, a lower surface (not shown), an internal lateral surface 18 and an external lateral surface 20. The fixing ring 42a has inclined flanges 50, 52 and 54 extending from the lateral surface external 20 to provide mounting surfaces 22a and 22b for connection braces 58. The

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upper surface 12 includes numerous upper holes 16, which extend through the upper surface 12 to the lower surface (not shown). The upper holes 16 can be used to fix wire and fasteners of the type nails (bolts), threaded or telescopic connecting rods, plates, struts or other connecting elements of the device to the ring 42a. The inclined flanges 50, 52, and 54 of the fastener also include threaded external openings (not shown) to provide support for connection braces 58a, 58b, 58c, 58d, 58e and 58f. The outer side surface 20 includes numerous threaded openings 26 that provide additional fasteners for braces 58 or other connecting elements (not shown).

The second fixing ring 42b includes an upper surface 12, a lower surface (not shown), an internal lateral surface 18 and an external lateral surface 20. The fixing ring 42b has inclined flanges 50b, 52b and 54b extending from the surface outer side 20 to provide mounting surfaces 22a and 22b for the connection braces 58. The upper surface 12 includes numerous upper holes 16 extending through the upper surface 12 to the lower surface (not shown). The upper holes 16 can be used for fastening wire and fasteners of the type nails (bolts), threaded or telescopic connecting rods, plates, struts or other connecting elements of the device to the ring 42b. The inclined flanges 50, 52 and 54 of the fastener also include threaded external openings (not shown) to provide support for connection braces 58a, 58b, 58c, 58d, 58e and 58f. The outer side surface 20 includes numerous threaded openings 26 that provide additional fasteners for the braces or other connecting elements (not shown).

Although the shape of the fastener rings 42a and 42b shown in FIGURE 6 is substantially circular, it should be understood that the shape of the fastener rings 42a and 42b can vary to accommodate the physical contour of various body parts to which the fastener is attached. fixing system 40. For example, fixing rings 42a and 42b can be configured to have an oval shape, D shape, U shape, C shape, or other irregular shapes. In some exemplary embodiments, an elliptical fixing ring (not shown) may be particularly advantageous. Inserting nails or wires into a patient's limb can cause the surrounding tissue to swell unevenly and, in this case, an elliptical fixative ring can better accommodate irregular swelling than a circular ring can do. The fixing rings 42a and 42b may be a complete ring or a segment or portion of a ring (for example, half ring, 1/3 ring, 1/4 ring, 3/8 ring, 5/8 ring, 2/3 ring, 3/4 ring, and others) used alone or attached to other segments or portions of the ring to form a fixing ring (not shown). The fixing rings 42a and 42b can be constructed of any material that provides the structural rigidity necessary for fixing, such as a metal, an alloy, carbon fiber, plastic, ceramic, etc.

FIGURE 7 is a side view of an embodiment of a fixing ring system 40. The fixing ring system 40 of the present application is illustrated as a part of the specific design, for simplicity. The fixing rings 42a and 42b include an upper surface 12, a lower surface (not shown), an internal lateral surface (not shown), and an external lateral surface 20. The fixing rings 42a and 42b have inclined flanges 14 extending from the outer side surface 20, to provide mounting surfaces 22a and 22b for the connection braces 58. The upper surface 12 includes numerous upper holes 16 extending through the upper surface 12 to the lower surface (not shown) . The upper holes 16 can be used to fix wire and fasteners of the type half nails (bolts), threaded or telescopic connecting rods, plates, struts or other connecting elements of the device to the ring 42. The inclined flanges 14 also include some threaded external openings 24 to provide support for the connection braces 58. A single connection tie 58 connects the fixing rings 42a and 42b. The outer side surface 20 includes numerous threaded openings 26 that provide additional fasteners for braces 58 or other connecting elements (not shown).

A connecting rod 58 is disposed between the first external fixing ring 42a and the second external fixing ring 42b, for clarity. Those skilled in the art will readily understand that numerous connecting rods 58 can be held in various positions around the external fixing rings, that the angle of the connecting rod 58 can be varied with respect to the first external fixing ring 42a and the second external fixing ring 42b, and that the length of the connecting rod 58 can be varied and adjusted.

Additionally, the present application provides a method and a stabilization apparatus by using multiple external fixing rings as a single device. For example, a first external fixing ring, which has 6 equidistant inclined flanges, is connected to a second external fixing ring having 6 equidistant inclined flanges, as before. A third external fixing ring is connected to the first external fixing ring, to the second external fixing ring, or to both, using the three disused inclined flanges.

It is contemplated that any embodiment discussed herein may be implemented in relation to any method, kit, reagent or composition of the invention, and vice versa. Additionally, the compositions of the invention can be used to obtain the methods of the invention.

It should be understood that the particular embodiments described herein are shown by way of illustration, and not as limitations of the invention. The main features of the present invention can

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be used in various embodiments without departing from the scope of the invention. Those skilled in the art will recognize, or will be able to determine by simply using systematic experimentation, numerous equivalents to the specific procedures described herein. Such equivalents are considered within the scope of the present invention, and are covered by the claims.

All publications and patent applications mentioned in the report are indicative of the level of experience of those skilled in the art to which the present invention belongs.

The use of the word "a" or "one", when used together with the term "comprising / n", in the claims and / or in the specification may mean "one", but it is also consistent with the meaning of "one or more", "at least one" and "one or more than one". The use of the term "or" in the claims means "and / or", unless expressly stated that it refers only to alternatives or that the alternatives are mutually exclusive, although the disclosure supports a definition that refers only to alternatives. already "and / or." Throughout this application, the term "approximately" is used to indicate that a value includes the inherent variation of device errors, the method being used to determine the value, or the variation that exists between the study subjects.

As used herein and claim / s, the words "comprising" (and any form of "comprising", such as "comprise" and "comprising"), "having" (and any form of "that has", such as "have" and "has"), "that includes" (and any form of "that includes", such as "includes" and "include") or "that contains" (and any form of "containing", such as "contains" and "contain"), are inclusive or open and do not exclude additional elements, or method steps not cited.

As used herein, the expression "or combinations thereof" refers to all permutations and combinations of the listed elements that precede the term. For example, "A, B, C, or combinations thereof" is intended to include at least one of: A, B, C, AB, AC, BC or ABC and, if the order is important in a particular context, also BA , CA, CB, ACB, ACB, ACB, BAC, or CAB. Following this example, combinations containing repetitions of one or more elements or terms, such as BB, AAA, MB, BBC, AAABCCCC, CBBAAA, CABABB, and so on, are expressly included. Those skilled in the art will understand that there is normally no limit to the number of elements or terms of any combination, unless otherwise evident from the context.

All compositions and / or methods disclosed and claimed herein may be made and executed without undue experimentation, in the light of the present disclosure. Although the compositions and methods of the present invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the art that variations may be applied to the compositions and / or methods, and to the steps or to the sequence of steps of the method described in This document, without departing from the concept, spirit and scope of the invention. All these substitutes and similar modifications, evident to those skilled in the art, are considered within the scope of the invention as defined by the appended claims.

Claims (17)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 65 1. An external fixing ring (10), comprising: a ring with a central opening defined therethrough, the ring having internal (18) and external (20) surfaces of the ring and upper (12) and lower surfaces of the ring; one or more flanges extending radially from the inner (18) or outer (20) surface, characterized in that each of the one or more flanges (14, 15) comprises at least one first (22a) and a second (22b ) mounting surfaces defined on the internal (18) or external (20) surface, each of the first (22a) and the second (22b) mounting surfaces (22a, 22b) having an opening (24, 25) defined in the same to receive a clamping device; said first (22a) and second (22b) mounting surfaces inclined between each other and the openings (24, 25) being located obliquely in the flange (14, 15). 2. The external fixing ring (10) of claim 1, wherein the opening (24) has a threaded internal surface, and the fastening device comprises a threaded pin. 3. The external fixing ring (10) of claim 1, wherein the opening (25) has a smooth internal surface, and the fastening device comprises a pin (27) having a terminal portion, having the terminal portion of the pin a groove (35) defined therein, and in which also the fixing ring (10) has trapezoidal flanges (15) that also have a clamping surface (23) disposed between the mounting surfaces (22a, 22b) , said holding surface (23) having a threaded bore (29) defined therein and which can be operable to receive a screw (31), the screw (31) being operable to engage with the groove (35) of the pin when the threaded hole (29) receives the screw (31), thereby substantially locking the pin (27) in place. 4. The external fixing ring (10) of claim 3, wherein the screw (31) is a headless screw. 5. The external fixing ring (10) of claim 1, further comprising one or more openings (16) of the ring which they extend through the upper surface (12) of the ring to the lower surface of the ring. 6. The external fixing ring (10) of claim 1, wherein the one or more flanges (14, 15) comprise a plurality of eyelashes (14, 15), the eyelashes (14, 15) being equidistant along the outer surface of the ring. 7. The external fixing ring (10) of claim 1, wherein the one or more flanges (14, 15) comprise six flanges (14, 15) located with a radial clearance of approximately 60 degrees along the surface outer ring 8. The external fixing ring (10) of claim 1, further comprising a plurality of information indicators arranged near each of the one or more flanges (14, 15). 9. The external fixing ring (10) of claim 1, further comprising: one or more openings (16), which extend through the upper surface (12) of the ring to the lower surface of the ring; one or more tie connection openings (26, 28) defined on the internal or external surface, the one or more tie connection openings (26, 28) extending at least partially towards the internal surface (18) or the external surface (20), in which each one of the one or more openings (26, 28) of tie rod connection is operable to receive a clamping device; wherein the clamping device received in each of the openings (24, 25), defined in the first (22a) and the second (22b) mounting surfaces (22a, 22b), is an additional connection element with respect to to the fastening device that can be received in the openings (26, 28) of the tie connection. 10. The external fixation ring (10) of claim 9, wherein one or more tie connection openings (28) are defined on the inner surface of the ring. 11. The external fixation ring (10) of claim 9, wherein one or more tie connection openings (26) are defined on the outer surface (20) of the ring. 12. The external fixing ring (10) of claim 9, further comprising an information indicator arranged in the ring. 13. The external fixing ring (10) of claim 9, further comprising a clamping mechanism for mounting a marker (70) on the ring. 14. The outer fixing ring (10) of claim 13, wherein the clamping mechanism comprises a pair of recessed portions (72) defined on the outer (20) or inner (18) surface of the ring (10), and the marker (70) 5 10 fifteen twenty 25 30 35 40 It comprises a pair of nodules (74) arranged on a surface of the marker (70), the nodules (74) being operable to fit tightly in the recessed portions. 15. The outer fixing ring (10) of claim 14, wherein the clamping mechanism comprises a rectangular recessed portion defined on the outer (20) or inner (18) surface of the ring (10), and the marker (70 ) comprises a rectangular pin arranged on a surface of the marker (70), the pin being operable to fit tightly in the recessed portions. 16. An assembly method of an external fixation device (40), the method comprising: providing a first and second external fixing rings (42a, 42b), each of the first and second rings (42a, 42b) having a central opening defined therethrough, each having the first and second rings (42a, 42b) ) an internal (18) and external (20) surface, and one or more flanges (14, 15) that extend radially from the internal (18) or external (20) surface, in which each of the one or more flanges (14, 15) comprise at least a first (22a) and second (22b) mounting surfaces defined on the inner (18) or outer (20) surface, each having the first (22a) and second (22b) mounting surfaces (22a, 22b) an opening (24, 25) defined therein to receive a clamping device; said first (22a) and second (22b) mounting surfaces inclined between sf and the openings (24, 25) being located obliquely in the flange (14, 15); providing a tie rod (58a, 58b, 58c, 58d, 58e, 58f) of ring having a first and second terminal portions; coupling the first and second fastening devices to the first and second terminal portions of the connecting rod (58a, 58b, 58c, 58d, 58e, 58f) ring; mount the connecting rod (58a, 58b, 58c, 58d, 58e, 58f) of ring in the first and second rings holding the first fastening device in the opening (24, 25) in the one or more flanges (14, 15 ) of the first ring (42a), and holding the second fastening device in the opening in the one or more flanges (14, 15) of the second ring (42b). 17. The method of claim 16, wherein the opening in the one or more flanges (15) of the first ring has a threaded inner surface, and the first fastener comprises a threaded screw, and in which also the fastener of the first fastening device in the opening in the one or more flanges of the first ring comprises inserting the threaded screw into the opening; or the method of claim 16, wherein the opening in the one or more flanges (14) of the first ring has a smooth internal surface, and the first fastening device comprises a pin (27) having a terminal portion, having the terminal terminal portion of the pin (27) a groove (35) defined therein, and in which also the fixing ring has trapezoidal flanges (15) that also have a clamping surface (23) disposed between the mounting surfaces (22a , 22b), said holding surface (23) having a threaded bore (29) defined therein and operable to receive a screw (31), and in which also the fastening of the first fastening device in the opening in the one or more flanges of the first ring comprises inserting a first screw (31) into the threaded bore (29), to engage with the groove (35) of the pin when the threaded bore (29) receives the screw (31).